I second the request. Sadly there isn't an instant file search engine for Android to date, but I think Android uses some sort of log file to keep track of filenames, which make something like "Everything for Android" common sense.

Is there really no good app like everything for android which can at least filter searches with wildcards or by filters like e.g. size range (e.g. file size 10-20MB) or sorting options e.g. smallest to biggest files, etc.?